<!DOCTYPE html>
<html lang=zh>
<head><meta name="generator" content="Hexo 3.9.0">
  <meta charset="utf-8">
  
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui">
  <meta name="renderer" content="webkit">
  <meta http-equiv="Cache-Control" content="no-transform">
  <meta http-equiv="Cache-Control" content="no-siteapp">
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <meta name="format-detection" content="telephone=no,email=no,adress=no">
  <!-- Color theme for statusbar -->
  <meta name="theme-color" content="#000000">
  <!-- 强制页面在当前窗口以独立页面显示,防止别人在框架里调用页面 -->
  <meta http-equiv="window-target" content="_top">
  
  
  <title>Ajax请求XMLHTTPRequest请求返回GBK编码中文乱码解决方法 | 山岚 - 90码农历险记</title>
  <meta name="description" content="前言当我通过跨域Ajax请求京东的商品库存接口时，返回的中文出现了乱码。有意思的是，当我多次请求尝试时，返回提会改变，并且返回的编码也会改变，所以偶尔会返回一个UTF-8的返回体。示例的请求接口如下： http://c0.3.cn/stocks?callback=getStockCallback&amp;amp;type=getstocks&amp;amp;skuIds=32399605916&amp;amp;area=">
<meta name="keywords" content="JavaScript">
<meta property="og:type" content="article">
<meta property="og:title" content="Ajax请求XMLHTTPRequest请求返回GBK编码中文乱码解决方法">
<meta property="og:url" content="https://blog.gobyte.cn/post/6258b05e.html">
<meta property="og:site_name" content="山岚博客">
<meta property="og:description" content="前言当我通过跨域Ajax请求京东的商品库存接口时，返回的中文出现了乱码。有意思的是，当我多次请求尝试时，返回提会改变，并且返回的编码也会改变，所以偶尔会返回一个UTF-8的返回体。示例的请求接口如下： http://c0.3.cn/stocks?callback=getStockCallback&amp;amp;type=getstocks&amp;amp;skuIds=32399605916&amp;amp;area=">
<meta property="og:locale" content="zh-CN">
<meta property="og:image" content="https://i.loli.net/2019/10/26/WObqrEwfxujoHGd.png">
<meta property="og:image" content="https://i.loli.net/2019/10/26/jlV3iBoRawDQZNY.png">
<meta property="og:updated_time" content="2019-12-10T08:14:59.806Z">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="Ajax请求XMLHTTPRequest请求返回GBK编码中文乱码解决方法">
<meta name="twitter:description" content="前言当我通过跨域Ajax请求京东的商品库存接口时，返回的中文出现了乱码。有意思的是，当我多次请求尝试时，返回提会改变，并且返回的编码也会改变，所以偶尔会返回一个UTF-8的返回体。示例的请求接口如下： http://c0.3.cn/stocks?callback=getStockCallback&amp;amp;type=getstocks&amp;amp;skuIds=32399605916&amp;amp;area=">
<meta name="twitter:image" content="https://i.loli.net/2019/10/26/WObqrEwfxujoHGd.png">
  <!-- Canonical links -->
  <link rel="canonical" href="https://blog.gobyte.cn/post/6258b05e.html">
  
    <link rel="alternate" href="/atom.xml" title="山岚博客" type="application/atom+xml">
  
  
    <link rel="icon" href="/shan-2.png" type="image/x-icon">
  
  <link rel="stylesheet" href="/css/style.css">
  
  
  
  
</head>


<body class="main-center theme-black" itemscope itemtype="http://schema.org/WebPage">
  <header class="header" itemscope itemtype="http://schema.org/WPHeader">
  <div class="slimContent">
    <div class="navbar-header">
      
      
      <div class="profile-block text-center">
        <a id="avatar" href="https://github.com/shanlanCoding" target="_blank">
          <img class="img-circle img-rotate" src="/images/ha-002-small.png" width="200" height="200">
        </a>
        <h2 id="name" class="hidden-xs hidden-sm">山岚</h2>
        <h3 id="title" class="hidden-xs hidden-sm hidden-md">半吊子全栈开发者</h3>
        <small id="location" class="text-muted hidden-xs hidden-sm"><i class="icon icon-map-marker"></i> Work in 0755; Home is in 0713</small>
      </div>
      
      <div class="search" id="search-form-wrap">

    <form class="search-form sidebar-form">
        <div class="input-group">
            <input type="text" class="search-form-input form-control" placeholder="搜索" />
            <span class="input-group-btn">
                <button type="submit" class="search-form-submit btn btn-flat" onclick="return false;"><i class="icon icon-search"></i></button>
            </span>
        </div>
    </form>
    <div class="ins-search">
  <div class="ins-search-mask"></div>
  <div class="ins-search-container">
    <div class="ins-input-wrapper">
      <input type="text" class="ins-search-input" placeholder="想要查找什么..." x-webkit-speech />
      <button type="button" class="close ins-close ins-selectable" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
    </div>
    <div class="ins-section-wrapper">
      <div class="ins-section-container"></div>
    </div>
  </div>
</div>


</div>
      <button class="navbar-toggle collapsed" type="button" data-toggle="collapse" data-target="#main-navbar" aria-controls="main-navbar" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
    </div>
    <nav id="main-navbar" class="collapse navbar-collapse" itemscope itemtype="http://schema.org/SiteNavigationElement" role="navigation">
      <ul class="nav navbar-nav main-nav menu-highlight">
        
        
        <li class="menu-item menu-item-home">
          <a href="/.">
            
            <i class="icon icon-home-fill"></i>
            
            <span class="menu-title">首页</span>
          </a>
        </li>
        
        
        <li class="menu-item menu-item-archives">
          <a href="/archives/">
            
            <i class="icon icon-archives-fill"></i>
            
            <span class="menu-title">归档</span>
          </a>
        </li>
        
        
        <li class="menu-item menu-item-categories">
          <a href="/categories/">
            
            <i class="icon icon-folder"></i>
            
            <span class="menu-title">分类</span>
          </a>
        </li>
        
        
        <li class="menu-item menu-item-tags">
          <a href="/tags/">
            
            <i class="icon icon-tags"></i>
            
            <span class="menu-title">标签</span>
          </a>
        </li>
        
        
        <li class="menu-item menu-item-links">
          <a href="/links/">
            
            <i class="icon icon-friendship"></i>
            
            <span class="menu-title">友链</span>
          </a>
        </li>
        
      </ul>
      
	
    <ul class="social-links">
    	
        <li><a href="https://github.com/shanlanCoding" target="_blank" title="Github" data-toggle=tooltip data-placement=top><i class="icon icon-github"></i></a></li>
        
        <li><a href="http://mail.qq.com/cgi-bin/qm_share?t=qm_mailme&email=CWRgen1se2phZnxJeHgnamZk" target="_blank" title="Email" data-toggle=tooltip data-placement=top><i class="icon icon-email"></i></a></li>
        
    </ul>

    </nav>
  </div>
</header>

  
    <aside class="sidebar" itemscope itemtype="http://schema.org/WPSideBar">
  <div class="slimContent">
    
      <div class="widget">
    <h3 class="widget-title">公告</h3>
    <div class="widget-body">
        <div id="board">
            <div class="content">
                <p>欢迎交流与分享经验，知无不言言无不尽!</p>
            </div>
        </div>
    </div>
</div>

    
      
  <div class="widget">
    <h3 class="widget-title">分类</h3>
    <div class="widget-body">
      <ul class="category-list"><li class="category-list-item"><a class="category-list-link" href="/categories/Java/">Java</a><span class="category-list-count">4</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/JavaScript/">JavaScript</a><span class="category-list-count">2</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/windows/">windows</a><span class="category-list-count">2</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/前端/">前端</a><span class="category-list-count">9</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/博客优化/">博客优化</a><span class="category-list-count">7</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/变得更好/">变得更好</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/心情/">心情</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/手机/">手机</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/服务器/">服务器</a><span class="category-list-count">3</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/求职/">求职</a><span class="category-list-count">4</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/骚操作/">骚操作</a><span class="category-list-count">3</span></li></ul>
    </div>
  </div>


    
      
  <div class="widget">
    <h3 class="widget-title">标签</h3>
    <div class="widget-body">
      <ul class="tag-list"><li class="tag-list-item"><a class="tag-list-link" href="/tags/AutoJs/">AutoJs</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Git/">Git</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Hexo/">Hexo</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Java/">Java</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/JavaScript/">JavaScript</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/Java面试题/">Java面试题</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/React/">React</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/React教程/">React教程</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/centOS/">centOS</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/java基础/">java基础</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/java集合框架/">java集合框架</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/linux/">linux</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nginx/">nginx</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/vue/">vue</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/windows-10/">windows 10</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/人脸识别/">人脸识别</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/博客优化/">博客优化</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/吐槽/">吐槽</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/小米6/">小米6</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/思维改变/">思维改变</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/自定义手机号/">自定义手机号</a><span class="tag-list-count">1</span></li></ul>
    </div>
  </div>


    
      
  <div class="widget">
    <h3 class="widget-title">标签云</h3>
    <div class="widget-body tagcloud">
      <a href="/tags/AutoJs/" style="font-size: 13.2px;">AutoJs</a> <a href="/tags/Git/" style="font-size: 13.4px;">Git</a> <a href="/tags/Hexo/" style="font-size: 13.8px;">Hexo</a> <a href="/tags/Java/" style="font-size: 13px;">Java</a> <a href="/tags/JavaScript/" style="font-size: 13.2px;">JavaScript</a> <a href="/tags/Java面试题/" style="font-size: 13.6px;">Java面试题</a> <a href="/tags/React/" style="font-size: 14px;">React</a> <a href="/tags/React教程/" style="font-size: 13px;">React教程</a> <a href="/tags/centOS/" style="font-size: 13px;">centOS</a> <a href="/tags/java基础/" style="font-size: 13px;">java基础</a> <a href="/tags/java集合框架/" style="font-size: 13px;">java集合框架</a> <a href="/tags/linux/" style="font-size: 13px;">linux</a> <a href="/tags/nginx/" style="font-size: 13.2px;">nginx</a> <a href="/tags/vue/" style="font-size: 13px;">vue</a> <a href="/tags/windows-10/" style="font-size: 13px;">windows 10</a> <a href="/tags/人脸识别/" style="font-size: 13px;">人脸识别</a> <a href="/tags/博客优化/" style="font-size: 13px;">博客优化</a> <a href="/tags/吐槽/" style="font-size: 13px;">吐槽</a> <a href="/tags/小米6/" style="font-size: 13px;">小米6</a> <a href="/tags/思维改变/" style="font-size: 13px;">思维改变</a> <a href="/tags/自定义手机号/" style="font-size: 13px;">自定义手机号</a>
    </div>
  </div>

    
      
  <div class="widget">
    <h3 class="widget-title">归档</h3>
    <div class="widget-body">
      <ul class="archive-list"><li class="archive-list-item"><a class="archive-list-link" href="/archives/2019/12/">十二月 2019</a><span class="archive-list-count">2</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2019/11/">十一月 2019</a><span class="archive-list-count">4</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2019/10/">十月 2019</a><span class="archive-list-count">2</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2019/09/">九月 2019</a><span class="archive-list-count">1</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2019/08/">八月 2019</a><span class="archive-list-count">11</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2019/07/">七月 2019</a><span class="archive-list-count">9</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2019/06/">六月 2019</a><span class="archive-list-count">9</span></li></ul>
    </div>
  </div>


    
      
  <div class="widget">
    <h3 class="widget-title">最新文章</h3>
    <div class="widget-body">
      <ul class="recent-post-list list-unstyled no-thumbnail">
        
          <li>
            
            <div class="item-inner">
              <p class="item-category">
                <a class="category-link" href="/categories/前端/">前端</a>
              </p>
              <p class="item-title">
                <a href="/post/7080982b.html" class="title">AntD的一个警告解决方法：defaultvalue is invalid for getfielddecorator will set value please use option.initialvalue instead</a>
              </p>
              <p class="item-date">
                <time datetime="2019-12-07T08:58:03.000Z" itemprop="datePublished">2019-12-07</time>
              </p>
            </div>
          </li>
          
          <li>
            
            <div class="item-inner">
              <p class="item-category">
                <a class="category-link" href="/categories/JavaScript/">JavaScript</a>
              </p>
              <p class="item-title">
                <a href="/post/cbc43a97.html" class="title">海信A5自动阅读打卡签到工具软件脚本</a>
              </p>
              <p class="item-date">
                <time datetime="2019-12-06T09:03:39.000Z" itemprop="datePublished">2019-12-06</time>
              </p>
            </div>
          </li>
          
          <li>
            
            <div class="item-inner">
              <p class="item-category">
                <a class="category-link" href="/categories/JavaScript/">JavaScript</a>
              </p>
              <p class="item-title">
                <a href="/post/ae3d322e.html" class="title"> AutoJs获取的Text文本是乱码|Android爬虫反字体屏蔽乱码解决方案 </a>
              </p>
              <p class="item-date">
                <time datetime="2019-11-23T03:50:19.000Z" itemprop="datePublished">2019-11-23</time>
              </p>
            </div>
          </li>
          
          <li>
            
            <div class="item-inner">
              <p class="item-category">
                <a class="category-link" href="/categories/服务器/">服务器</a>
              </p>
              <p class="item-title">
                <a href="/post/1a22163b.html" class="title">GitHub克隆clone太慢添加代理加速访问</a>
              </p>
              <p class="item-date">
                <time datetime="2019-11-13T03:51:13.000Z" itemprop="datePublished">2019-11-13</time>
              </p>
            </div>
          </li>
          
          <li>
            
            <div class="item-inner">
              <p class="item-category">
                <a class="category-link" href="/categories/心情/">心情</a>
              </p>
              <p class="item-title">
                <a href="/post/d90e4430.html" class="title">奇葩公司每周晚上占用下班时间开会、团建（跑步）</a>
              </p>
              <p class="item-date">
                <time datetime="2019-11-11T06:36:16.000Z" itemprop="datePublished">2019-11-11</time>
              </p>
            </div>
          </li>
          
      </ul>
    </div>
  </div>
  

    
  </div>
</aside>

  
  
<aside class="sidebar sidebar-toc collapse" id="collapseToc" itemscope itemtype="http://schema.org/WPSideBar">
  <div class="slimContent">
    <nav id="toc" class="article-toc">
      <h3 class="toc-title">文章目录</h3>
      <ol class="toc"><li class="toc-item toc-level-1"><a class="toc-link" href="#前言"><span class="toc-number">1.</span> <span class="toc-text">前言</span></a></li><li class="toc-item toc-level-1"><a class="toc-link" href="#解决方法"><span class="toc-number">2.</span> <span class="toc-text">解决方法</span></a><ol class="toc-child"><li class="toc-item toc-level-2"><a class="toc-link" href="#1-全局查找中文判断"><span class="toc-number">2.1.</span> <span class="toc-text">1.全局查找中文判断</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#2-使用Script的标签来完成跨域以及GBK解码"><span class="toc-number">2.2.</span> <span class="toc-text">2.使用Script的标签来完成跨域以及GBK解码</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#3-意外发现，不需要判断中文也能知道库存状态"><span class="toc-number">2.3.</span> <span class="toc-text">3.意外发现，不需要判断中文也能知道库存状态</span></a></li></ol></li><li class="toc-item toc-level-1"><a class="toc-link" href="#其它解决方法"><span class="toc-number">3.</span> <span class="toc-text">其它解决方法</span></a></li></ol>
    </nav>
  </div>
</aside>

<main class="main" role="main">
  <div class="content">
  <article id="post-Ajax请求XMLHTTPRequest请求返回GBK编码中文乱码解决方法" class="article article-type-post" itemscope itemtype="http://schema.org/BlogPosting">
    
    <div class="article-header" name="标题头部>
      
        
  
    <h1 class="article-title" itemprop="name">
      Ajax请求XMLHTTPRequest请求返回GBK编码中文乱码解决方法
    </h1>
  

      
      <div class="article-meta">
        <span class="article-date">
    <i class="icon icon-calendar-check"></i>
	<a href="/post/6258b05e.html" class="article-date">
	  <time datetime="2019-10-26T01:43:52.000Z" itemprop="datePublished">2019-10-26</time>
	</a>
</span>
        
  <span class="article-category">
    <i class="icon icon-folder"></i>
    <a class="article-category-link" href="/categories/前端/">前端</a>
  </span>

        
  <span class="article-tag">
    <i class="icon icon-tags"></i>
	<a class="article-tag-link" href="/tags/JavaScript/">JavaScript</a>
  </span>


        
	<span class="article-read hidden-xs">
	    <i class="icon icon-eye-fill" aria-hidden="true"></i>
	    <span id="busuanzi_container_page_pv">
			<span id="busuanzi_value_page_pv">0</span>
		</span>
	</span>


	<span class="article-read hidden-xs">
    	<i class="icon icon-eye-fill" aria-hidden="true"></i>
    	<span id="/post/6258b05e.html" class="leancloud_visitors"  data-flag-title="Ajax请求XMLHTTPRequest请求返回GBK编码中文乱码解决方法">
			<span class="leancloud-visitors-count">0</span>
		</span>
    </span>

        <span class="post-comment"><i class="icon icon-comment"></i> <a href="/post/6258b05e.html#comments" class="article-comment-link">评论</a></span>
        
      </div>
    </div>
    <div class="article-entry marked-body" itemprop="articleBody" name="正文">
      
        <h1 id="前言"><a href="#前言" class="headerlink" title="前言"></a>前言</h1><p>当我通过跨域Ajax请求京东的商品库存接口时，返回的中文出现了乱码。有意思的是，当我多次请求尝试时，返回提会改变，并且返回的编码也会改变，所以偶尔会返回一个UTF-8的返回体。示例的请求接口如下：</p>
<p><code>http://c0.3.cn/stocks?callback=getStockCallback&amp;type=getstocks&amp;skuIds=32399605916&amp;area=15_1213_1214_0&amp;1572054766314</code></p>
<ul>
<li>skuIds                        商品的id</li>
<li>getStockCallback        回调函数；可以使用这个名字来编写一个回调处理函数</li>
<li>area                            地区编码；需要查询库存的地区</li>
</ul>
<p>正常的请求如下，会乱码：</p>
<p><img src="https://i.loli.net/2019/10/26/WObqrEwfxujoHGd.png" alt="返回体截图">!</p>
<p>可是当多次请求以后，返回体会发生改变，并且中文也能显示了：</p>
<p><img src="https://i.loli.net/2019/10/26/jlV3iBoRawDQZNY.png" alt="返回体发生了改变"></p>
<h1 id="解决方法"><a href="#解决方法" class="headerlink" title="解决方法"></a>解决方法</h1><h2 id="1-全局查找中文判断"><a href="#1-全局查找中文判断" class="headerlink" title="1.全局查找中文判断"></a>1.全局查找中文判断</h2><p>由于第一种返回体中文是乱码的，起初我第一种判定方法是查找有无“现货”和“无货”两种关键词。例如我想查询“现货”，代码如下：</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">if</span> (r.responseText.indexOf( <span class="string">'现货'</span> ) &gt; <span class="number">0</span>) &#123;</span><br><span class="line">    alert( <span class="string">'现货'</span> );</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>但是这种方法比较蠢。原因有下几点：</p>
<ol>
<li>每次返回中不一定都是中文，即使“有货”，也不一定是中文显示</li>
<li>当“有货”时，但是不是中文，代码还一直以为无货。时间过去了以后很有可能被他人购买了，即使“有货”也真的会变成“无货”</li>
</ol>
<h2 id="2-使用Script的标签来完成跨域以及GBK解码"><a href="#2-使用Script的标签来完成跨域以及GBK解码" class="headerlink" title="2.使用Script的标签来完成跨域以及GBK解码"></a>2.使用Script的标签来完成跨域以及GBK解码</h2><p>使用<code>&lt;script&gt;</code>标签来跨域请求；因为浏览器的同源策略限制，请求非当前页码的域名的时候，会被浏览器阻止，但是<code>&lt;script&gt;</code>标签受此影响。其实Ajax的跨域请求也是利用该原理。但是，<code>&lt;scprit&gt;</code>标签的优点是可以设置编码格式，也就是说即使后台返回了GBK编码，我们照样能够得到中文字符串，下面是代码示例：</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//检查库存</span></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">checkStock</span>(<span class="params"></span>) </span>&#123;</span><br><span class="line">    <span class="comment">//创建一个script对象</span></span><br><span class="line">    <span class="keyword">var</span> script = <span class="built_in">document</span>.createElement( <span class="string">'script'</span> );</span><br><span class="line">    <span class="comment">//设置请求地址</span></span><br><span class="line">    script.src = <span class="string">'http://c0.3.cn/stocks?callback=getStockCallback&amp;type=getstocks&amp;skuIds=32399605916&amp;area=15_1213_1214_0&amp;1572054766314'</span> + <span class="keyword">new</span> <span class="built_in">Date</span>().getTime();</span><br><span class="line">    <span class="comment">//设置GBK编码</span></span><br><span class="line">    script.charset = <span class="string">'gbk'</span>;</span><br><span class="line">    <span class="comment">//将script对象添加到dom中</span></span><br><span class="line">    <span class="built_in">document</span>.body.appendChild( script );</span><br><span class="line">    <span class="comment">//错误时触发事件；当请求服务器返回错误代码时，会自动调用该事件</span></span><br><span class="line">    script.onerror = <span class="function"><span class="keyword">function</span> (<span class="params"></span>) </span>&#123;</span><br><span class="line">        <span class="comment">//错误时重复执行本身函数</span></span><br><span class="line">        checkStock();</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>其实光有一个请求函数还是不够的。我们还需要编写一个<strong>回调函数</strong>来处理返回值。这里啰嗦几句，很多新人对这个玩意理解不够很容易造成困扰，包括我之前也是这样。所谓回调函数个人理解是：当向服务器发送请求成功以后，我们会定义一个函数来进行处理。也就是：返回后调用函数，简称回调函数。</p>
<p>回调函数是定义在请求链接中，也就是上面URL参数里的：<code>callback=getStockCallback</code>，那么函数名就是：<code>getStockCallback</code>，我的回调函数如下：</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//回调函数</span></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">getStockCallback</span>(<span class="params"> data </span>) </span>&#123;</span><br><span class="line"></span><br><span class="line">    <span class="comment">//取出数据</span></span><br><span class="line">    <span class="keyword">for</span> (<span class="keyword">var</span> sk1 <span class="keyword">in</span> data) &#123;</span><br><span class="line">        <span class="built_in">console</span>.log( data[sk1][<span class="string">'StockStateName'</span>] );</span><br><span class="line">        <span class="keyword">var</span> productStockStatus = data[sk1][<span class="string">'StockStateName'</span>];</span><br><span class="line">        <span class="keyword">var</span> stockState = data[sk1][<span class="string">'stockState'</span>];</span><br><span class="line">        <span class="built_in">console</span>.log( <span class="string">'productStockStatus='</span>, productStockStatus, <span class="string">'stockState='</span>, stockState );</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="comment">//判断是否有货</span></span><br><span class="line">    <span class="keyword">if</span> (productStockStatus !== <span class="string">'无货'</span>) &#123;</span><br><span class="line">        alert( <span class="string">'Baby! 现在有货了！快买！'</span> );</span><br><span class="line">        <span class="built_in">window</span>.clearTimeout( t1 );</span><br><span class="line">    &#125; <span class="keyword">else</span> &#123;</span><br><span class="line">        <span class="built_in">window</span>.clearTimeout( t1 );</span><br><span class="line">        <span class="comment">//设置定时执行</span></span><br><span class="line">        t1 = <span class="built_in">window</span>.setTimeout( checkStock, <span class="number">3</span> * <span class="number">1000</span> );</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>至此，该代码就能完整的解析GBK编码了</p>
<h2 id="3-意外发现，不需要判断中文也能知道库存状态"><a href="#3-意外发现，不需要判断中文也能知道库存状态" class="headerlink" title="3.意外发现，不需要判断中文也能知道库存状态"></a>3.意外发现，不需要判断中文也能知道库存状态</h2><p>其实，在我编码的过程中发现，能不能解析中文不重要，因为在返回体重已经有一个字段已经表明了库存状态了，请参考以下代码：</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//判断状态</span></span><br><span class="line"><span class="keyword">var</span> stockName = <span class="string">''</span>;</span><br><span class="line"><span class="keyword">if</span> (stockState === <span class="number">33</span>) &#123;</span><br><span class="line">    stockName = <span class="string">'现货'</span>;</span><br><span class="line">&#125; <span class="keyword">else</span> <span class="keyword">if</span> (stockState === <span class="number">39</span> || stockState === <span class="number">40</span>) &#123;</span><br><span class="line">    stockName = <span class="string">'有货'</span>;</span><br><span class="line">&#125; <span class="keyword">else</span> <span class="keyword">if</span> (stockState === <span class="number">36</span>) &#123;</span><br><span class="line">    stockName = <span class="string">'预定'</span>;</span><br><span class="line">&#125; <span class="keyword">else</span> &#123;</span><br><span class="line">    stockName = <span class="string">'无货'</span>;</span><br><span class="line">&#125;</span><br><span class="line"><span class="built_in">console</span>.log( <span class="string">'stockName='</span>, stockName );</span><br></pre></td></tr></table></figure>

<p>所以如果只需要监测库存的话，判断下这个<code>stockState</code>字段就可以了。</p>
<h1 id="其它解决方法"><a href="#其它解决方法" class="headerlink" title="其它解决方法"></a>其它解决方法</h1><ol>
<li><a href="https://blog.csdn.net/shimiso/article/details/5721640" target="_blank" rel="noopener">GBK编码下jQuery Ajax中文乱码终极暴力解决方案</a>；我未尝试</li>
</ol>
<p>我依然希望能找到Ajax 解码GBK方法，因为script标签还是有些繁琐。</p>

      
    </div>

    <div class="article-footer" name="文章脚部">
      <blockquote class="mt-2x">
  <ul class="post-copyright list-unstyled">
    
    <li class="post-copyright-link hidden-xs">
      <strong>本文链接：</strong>
      <a href="https://blog.gobyte.cn/post/6258b05e.html" title="Ajax请求XMLHTTPRequest请求返回GBK编码中文乱码解决方法" target="_blank" rel="external">https://blog.gobyte.cn/post/6258b05e.html</a>
    </li>
    
    <li class="post-copyright-license">
      <strong>版权声明： </strong> 本博客所有文章除特别声明外，均采用 <a href="http://creativecommons.org/licenses/by/4.0/deed.zh" target="_blank" rel="external">CC BY 4.0 CN协议</a> 许可协议。转载请注明出处！
    </li>
  </ul>
</blockquote>


<div class="panel panel-default panel-badger">
  <div class="panel-body">
    <figure class="media">
      <div class="media-left">
        <a href="https://github.com/shanlanCoding" target="_blank" class="img-burn thumb-sm visible-lg">
          <img src="/images/ha-002-small.png" class="img-rounded w-full" alt="">
        </a>
      </div>
      <div class="media-body">
        <h3 class="media-heading"><a href="https://github.com/shanlanCoding" target="_blank"><span class="text-dark">山岚</span><small class="ml-1x">半吊子全栈开发者</small></a></h3>
        <div>大龄萌新；新时代福娃；喜欢东搞西搞；对待问题有独到的见解；</div>
      </div>
    </figure>
  </div>
</div>


    </div>
  </article>
  
    
  <section id="comments">
  	
      <div id="vcomments"></div>
    
  </section>


  
</div>

  <nav class="bar bar-footer clearfix" data-stick-bottom>
  <div class="bar-inner">
  
  <ul class="pager pull-left">
    
    <li class="prev">
      <a href="/post/f54c318f.html" title="React使用andt的table翻页按钮不更新的问题"><i class="icon icon-angle-left" aria-hidden="true"></i><span>&nbsp;&nbsp;上一篇</span></a>
    </li>
    
    
    <li class="next">
      <a href="/post/fbb1b617.html" title="React不同环境使用不同配置：开发、内网、外网、客户"><span>下一篇&nbsp;&nbsp;</span><i class="icon icon-angle-right" aria-hidden="true"></i></a>
    </li>
    
    
    <li class="toggle-toc">
      <a class="toggle-btn collapsed" data-toggle="collapse" href="#collapseToc" aria-expanded="false" title="文章目录" role="button">
        <span>[&nbsp;</span><span>文章目录</span>
        <i class="text-collapsed icon icon-anchor"></i>
        <i class="text-in icon icon-close"></i>
        <span>]</span>
      </a>
    </li>
    
  </ul>
  
  
  
  <div class="bar-right">
    
  </div>
  </div>
</nav>
  



  	<script>
	  <!-- 百度站长自动推送链接 -->
		(function(){
		var bp = document.createElement('script');
		var curProtocol = window.location.protocol.split(':')[0];
		if (curProtocol === 'https') {
			bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
		}
		else {
			bp.src = 'http://push.zhanzhang.baidu.com/push.js';
		}
		var s = document.getElementsByTagName("script")[0];
		s.parentNode.insertBefore(bp, s);
		})();
	</script>
</main>

  <footer class="footer" itemscope itemtype="http://schema.org/WPFooter">
	
	
    <ul class="social-links">
    	
        <li><a href="https://github.com/shanlanCoding" target="_blank" title="Github" data-toggle=tooltip data-placement=top><i class="icon icon-github"></i></a></li>
        
        <li><a href="http://mail.qq.com/cgi-bin/qm_share?t=qm_mailme&email=CWRgen1se2phZnxJeHgnamZk" target="_blank" title="Email" data-toggle=tooltip data-placement=top><i class="icon icon-email"></i></a></li>
        
    </ul>



	<div class="powered-by" name="不蒜子" sytle="font-size:12px">
		<i class="icon icon-users"></i>
		<span id="busuanzi_container_site_uv">
			总访客 : <span id="busuanzi_value_site_uv"></span>
		</span><br/>
		<i class="icon icon-eye-fill"></i>
		<span id="busuanzi_container_site_pv">
		    总阅读 : <span id="busuanzi_value_site_pv"></span>
		</span>
	</div>
    
	<div class="copyright" name="作者">
		
		<div class="publishby">
			Theme by <a href="https://github.com/cofess" target="_blank"> cofess </a>base on <a href="https://github.com/cofess/hexo-theme-pure" target="_blank">pure</a>.
		</div>
	</div>

</footer>
  <script src="//cdn.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js"></script>

<script>
	window.jQuery || document.write('<script src="js/jquery.min.js"><\/script>')

		<!-- 百度统计 -script.ejs --> 
		var _hmt = _hmt || [];
		(function() {
		  var hm = document.createElement("script");
		  hm.src = "https://hm.baidu.com/hm.js?e003775b21b75a71e1396c1fc395cce7";
		  var s = document.getElementsByTagName("script")[0]; 
		  s.parentNode.insertBefore(hm, s);
		})();

		<!-- 新浪云防盗链 -->
		var link = "" ;
		setTimeout( function(){
			$("img").each( (i,o) => {
				var o = $(o);
				if(o.attr("src").indexOf("sinaimg") > 0 ){
					o.attr("referrerpolicy","no-referrer");
					link = o.attr("src");
					o.attr("src",link);
				}
			});
		},1000);

</script>

<script src="/js/plugin.min.js"></script>
<script src="/js/application.js"></script>

    <script>
(function (window) {
    var INSIGHT_CONFIG = {
        TRANSLATION: {
            POSTS: '文章',
            PAGES: '页面',
            CATEGORIES: '分类',
            TAGS: '标签',
            UNTITLED: '(未命名)',
        },
        ROOT_URL: '/',
        CONTENT_URL: '/content.json',
    };
    window.INSIGHT_CONFIG = INSIGHT_CONFIG;
})(window);
</script>
<script src="/js/insight.js"></script>






	
   
<script async src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script>




   
    
  <script src="//cdn1.lncld.net/static/js/3.0.4/av-min.js"></script>
  <script src="//cdn.jsdelivr.net/npm/valine"></script>
  <script type="text/javascript">
  var GUEST = ['nick', 'mail', 'link'];
  var meta = 'nick,mail,link';
  meta = meta.split(',').filter(function(item) {
    return GUEST.indexOf(item) > -1;
  });
  new Valine({
    el: '#vcomments',
    verify: false,
    notify: false,
    appId: 'ksrz2lYRLkGCOqMraVC2gBB3-gzGzoHsz',
    appKey: 'ehlbHl0wgN6gbvN4NQexYxnl',
    placeholder: '说点什么吧？',
    avatar: 'robohash',
    meta: meta,
    pageSize: '10' || 10,
    visitor: true
  });
  </script>

     







</body>
</html>